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1.发明授权
公开(公告)号：US4292085A
公开(公告)日：1981-09-29
申请号：US75446
申请日：1979-09-14
CPC分类号： C01G49/14 , Y10S106/90 , Y10S423/12
摘要： Ferrous sulphate heptahydrate obtained as a by-product of the production of titanium dioxide by the sulphate process is converted into a non-polluting, free-flowing particulate neutralization product by contacting said sulphate with calcium hydroxide as a neutralizing agent in a molar ratio between said neutralizing agent and said ferrous sulphate of at least 1:1, and reacting the resulting mixture under agitation at a temperature not exceeding 60.degree. C. and for a contact time not exceeding five minutes.
摘要翻译： 通过硫酸盐法生产二氧化钛的副产物获得的作为副产物的硫酸亚铁七水合物通过使所述硫酸盐与作为中和剂的氢氧化钙以所述的中和剂的摩尔比接触而转化成无污染的自由流动的颗粒中和产物 中和剂和所述硫酸亚铁至少为1:1，并在搅拌下在不超过60℃的温度下反应所得混合物，接触时间不超过5分钟。
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2.发明授权Process for the processing of slag from aluminium scrap and waste melting, recovery of components thereof and treatment of gasses generated 失效用于处理来自铝废料和废物熔融的渣的方法，其组分的回收和产生的气体处理
公开(公告)号：US5013356A
公开(公告)日：1991-05-07
申请号：US465777
申请日：1990-01-16
申请人： Marco Olper , Tullio Corsini , Pierluigi Fracchia
发明人： Marco Olper , Tullio Corsini , Pierluigi Fracchia
CPC分类号： C22B7/04 , C22B21/0007 , Y02P10/218
摘要： The present invention relates to a process and a plant for the processing of saline slag from the melting of aluminium scrap and waste with a saline flux in which the salts constituting the flux are recovered and other components of the slag are separated. The harmful or toxic gases developed during this processing are subjected to combustion to produce flue gases dispersible in the atmosphere with recovery of combustion heat, preferably used over in processing the slag.
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